mirror of
https://github.com/reactos/reactos.git
synced 2024-09-05 18:26:53 +00:00
813 lines
23 KiB
C
813 lines
23 KiB
C
/*******************************************************************************
|
|
*
|
|
* Module Name: utdelete - object deletion and reference count utilities
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2018, Intel Corp.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#include "acpi.h"
|
|
#include "accommon.h"
|
|
#include "acinterp.h"
|
|
#include "acnamesp.h"
|
|
#include "acevents.h"
|
|
|
|
|
|
#define _COMPONENT ACPI_UTILITIES
|
|
ACPI_MODULE_NAME ("utdelete")
|
|
|
|
/* Local prototypes */
|
|
|
|
static void
|
|
AcpiUtDeleteInternalObj (
|
|
ACPI_OPERAND_OBJECT *Object);
|
|
|
|
static void
|
|
AcpiUtUpdateRefCount (
|
|
ACPI_OPERAND_OBJECT *Object,
|
|
UINT32 Action);
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtDeleteInternalObj
|
|
*
|
|
* PARAMETERS: Object - Object to be deleted
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Low level object deletion, after reference counts have been
|
|
* updated (All reference counts, including sub-objects!)
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
AcpiUtDeleteInternalObj (
|
|
ACPI_OPERAND_OBJECT *Object)
|
|
{
|
|
void *ObjPointer = NULL;
|
|
ACPI_OPERAND_OBJECT *HandlerDesc;
|
|
ACPI_OPERAND_OBJECT *SecondDesc;
|
|
ACPI_OPERAND_OBJECT *NextDesc;
|
|
ACPI_OPERAND_OBJECT *StartDesc;
|
|
ACPI_OPERAND_OBJECT **LastObjPtr;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE_PTR (UtDeleteInternalObj, Object);
|
|
|
|
|
|
if (!Object)
|
|
{
|
|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* Must delete or free any pointers within the object that are not
|
|
* actual ACPI objects (for example, a raw buffer pointer).
|
|
*/
|
|
switch (Object->Common.Type)
|
|
{
|
|
case ACPI_TYPE_STRING:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** String %p, ptr %p\n",
|
|
Object, Object->String.Pointer));
|
|
|
|
/* Free the actual string buffer */
|
|
|
|
if (!(Object->Common.Flags & AOPOBJ_STATIC_POINTER))
|
|
{
|
|
/* But only if it is NOT a pointer into an ACPI table */
|
|
|
|
ObjPointer = Object->String.Pointer;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** Buffer %p, ptr %p\n",
|
|
Object, Object->Buffer.Pointer));
|
|
|
|
/* Free the actual buffer */
|
|
|
|
if (!(Object->Common.Flags & AOPOBJ_STATIC_POINTER))
|
|
{
|
|
/* But only if it is NOT a pointer into an ACPI table */
|
|
|
|
ObjPointer = Object->Buffer.Pointer;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, " **** Package of count %X\n",
|
|
Object->Package.Count));
|
|
|
|
/*
|
|
* Elements of the package are not handled here, they are deleted
|
|
* separately
|
|
*/
|
|
|
|
/* Free the (variable length) element pointer array */
|
|
|
|
ObjPointer = Object->Package.Elements;
|
|
break;
|
|
|
|
/*
|
|
* These objects have a possible list of notify handlers.
|
|
* Device object also may have a GPE block.
|
|
*/
|
|
case ACPI_TYPE_DEVICE:
|
|
|
|
if (Object->Device.GpeBlock)
|
|
{
|
|
(void) AcpiEvDeleteGpeBlock (Object->Device.GpeBlock);
|
|
}
|
|
|
|
/*lint -fallthrough */
|
|
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_THERMAL:
|
|
|
|
/* Walk the address handler list for this object */
|
|
|
|
HandlerDesc = Object->CommonNotify.Handler;
|
|
while (HandlerDesc)
|
|
{
|
|
NextDesc = HandlerDesc->AddressSpace.Next;
|
|
AcpiUtRemoveReference (HandlerDesc);
|
|
HandlerDesc = NextDesc;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_MUTEX:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Mutex %p, OS Mutex %p\n",
|
|
Object, Object->Mutex.OsMutex));
|
|
|
|
if (Object == AcpiGbl_GlobalLockMutex)
|
|
{
|
|
/* Global Lock has extra semaphore */
|
|
|
|
(void) AcpiOsDeleteSemaphore (AcpiGbl_GlobalLockSemaphore);
|
|
AcpiGbl_GlobalLockSemaphore = NULL;
|
|
|
|
AcpiOsDeleteMutex (Object->Mutex.OsMutex);
|
|
AcpiGbl_GlobalLockMutex = NULL;
|
|
}
|
|
else
|
|
{
|
|
AcpiExUnlinkMutex (Object);
|
|
AcpiOsDeleteMutex (Object->Mutex.OsMutex);
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_EVENT:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Event %p, OS Semaphore %p\n",
|
|
Object, Object->Event.OsSemaphore));
|
|
|
|
(void) AcpiOsDeleteSemaphore (Object->Event.OsSemaphore);
|
|
Object->Event.OsSemaphore = NULL;
|
|
break;
|
|
|
|
case ACPI_TYPE_METHOD:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Method %p\n", Object));
|
|
|
|
/* Delete the method mutex if it exists */
|
|
|
|
if (Object->Method.Mutex)
|
|
{
|
|
AcpiOsDeleteMutex (Object->Method.Mutex->Mutex.OsMutex);
|
|
AcpiUtDeleteObjectDesc (Object->Method.Mutex);
|
|
Object->Method.Mutex = NULL;
|
|
}
|
|
|
|
if (Object->Method.Node)
|
|
{
|
|
Object->Method.Node = NULL;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_REGION:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Region %p\n", Object));
|
|
|
|
/*
|
|
* Update AddressRange list. However, only permanent regions
|
|
* are installed in this list. (Not created within a method)
|
|
*/
|
|
if (!(Object->Region.Node->Flags & ANOBJ_TEMPORARY))
|
|
{
|
|
AcpiUtRemoveAddressRange (Object->Region.SpaceId,
|
|
Object->Region.Node);
|
|
}
|
|
|
|
SecondDesc = AcpiNsGetSecondaryObject (Object);
|
|
if (SecondDesc)
|
|
{
|
|
/*
|
|
* Free the RegionContext if and only if the handler is one of the
|
|
* default handlers -- and therefore, we created the context object
|
|
* locally, it was not created by an external caller.
|
|
*/
|
|
HandlerDesc = Object->Region.Handler;
|
|
if (HandlerDesc)
|
|
{
|
|
NextDesc = HandlerDesc->AddressSpace.RegionList;
|
|
StartDesc = NextDesc;
|
|
LastObjPtr = &HandlerDesc->AddressSpace.RegionList;
|
|
|
|
/* Remove the region object from the handler list */
|
|
|
|
while (NextDesc)
|
|
{
|
|
if (NextDesc == Object)
|
|
{
|
|
*LastObjPtr = NextDesc->Region.Next;
|
|
break;
|
|
}
|
|
|
|
/* Walk the linked list of handlers */
|
|
|
|
LastObjPtr = &NextDesc->Region.Next;
|
|
NextDesc = NextDesc->Region.Next;
|
|
|
|
/* Prevent infinite loop if list is corrupted */
|
|
|
|
if (NextDesc == StartDesc)
|
|
{
|
|
ACPI_ERROR ((AE_INFO,
|
|
"Circular region list in address handler object %p",
|
|
HandlerDesc));
|
|
return_VOID;
|
|
}
|
|
}
|
|
|
|
if (HandlerDesc->AddressSpace.HandlerFlags &
|
|
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)
|
|
{
|
|
/* Deactivate region and free region context */
|
|
|
|
if (HandlerDesc->AddressSpace.Setup)
|
|
{
|
|
(void) HandlerDesc->AddressSpace.Setup (Object,
|
|
ACPI_REGION_DEACTIVATE,
|
|
HandlerDesc->AddressSpace.Context,
|
|
&SecondDesc->Extra.RegionContext);
|
|
}
|
|
}
|
|
|
|
AcpiUtRemoveReference (HandlerDesc);
|
|
}
|
|
|
|
/* Now we can free the Extra object */
|
|
|
|
AcpiUtDeleteObjectDesc (SecondDesc);
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Buffer Field %p\n", Object));
|
|
|
|
SecondDesc = AcpiNsGetSecondaryObject (Object);
|
|
if (SecondDesc)
|
|
{
|
|
AcpiUtDeleteObjectDesc (SecondDesc);
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"***** Bank Field %p\n", Object));
|
|
|
|
SecondDesc = AcpiNsGetSecondaryObject (Object);
|
|
if (SecondDesc)
|
|
{
|
|
AcpiUtDeleteObjectDesc (SecondDesc);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
}
|
|
|
|
/* Free any allocated memory (pointer within the object) found above */
|
|
|
|
if (ObjPointer)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object Subptr %p\n",
|
|
ObjPointer));
|
|
ACPI_FREE (ObjPointer);
|
|
}
|
|
|
|
/* Now the object can be safely deleted */
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ALLOCATIONS, "%s: Deleting Object %p [%s]\n",
|
|
ACPI_GET_FUNCTION_NAME, Object, AcpiUtGetObjectTypeName (Object)));
|
|
|
|
AcpiUtDeleteObjectDesc (Object);
|
|
return_VOID;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtDeleteInternalObjectList
|
|
*
|
|
* PARAMETERS: ObjList - Pointer to the list to be deleted
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: This function deletes an internal object list, including both
|
|
* simple objects and package objects
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiUtDeleteInternalObjectList (
|
|
ACPI_OPERAND_OBJECT **ObjList)
|
|
{
|
|
ACPI_OPERAND_OBJECT **InternalObj;
|
|
|
|
|
|
ACPI_FUNCTION_ENTRY ();
|
|
|
|
|
|
/* Walk the null-terminated internal list */
|
|
|
|
for (InternalObj = ObjList; *InternalObj; InternalObj++)
|
|
{
|
|
AcpiUtRemoveReference (*InternalObj);
|
|
}
|
|
|
|
/* Free the combined parameter pointer list and object array */
|
|
|
|
ACPI_FREE (ObjList);
|
|
return;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtUpdateRefCount
|
|
*
|
|
* PARAMETERS: Object - Object whose ref count is to be updated
|
|
* Action - What to do (REF_INCREMENT or REF_DECREMENT)
|
|
*
|
|
* RETURN: None. Sets new reference count within the object
|
|
*
|
|
* DESCRIPTION: Modify the reference count for an internal acpi object
|
|
*
|
|
******************************************************************************/
|
|
|
|
static void
|
|
AcpiUtUpdateRefCount (
|
|
ACPI_OPERAND_OBJECT *Object,
|
|
UINT32 Action)
|
|
{
|
|
UINT16 OriginalCount;
|
|
UINT16 NewCount = 0;
|
|
ACPI_CPU_FLAGS LockFlags;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (UtUpdateRefCount);
|
|
|
|
|
|
if (!Object)
|
|
{
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Always get the reference count lock. Note: Interpreter and/or
|
|
* Namespace is not always locked when this function is called.
|
|
*/
|
|
LockFlags = AcpiOsAcquireLock (AcpiGbl_ReferenceCountLock);
|
|
OriginalCount = Object->Common.ReferenceCount;
|
|
|
|
/* Perform the reference count action (increment, decrement) */
|
|
|
|
switch (Action)
|
|
{
|
|
case REF_INCREMENT:
|
|
|
|
NewCount = OriginalCount + 1;
|
|
Object->Common.ReferenceCount = NewCount;
|
|
AcpiOsReleaseLock (AcpiGbl_ReferenceCountLock, LockFlags);
|
|
|
|
/* The current reference count should never be zero here */
|
|
|
|
if (!OriginalCount)
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"Obj %p, Reference Count was zero before increment\n",
|
|
Object));
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Type %.2X [%s] Refs %.2X [Incremented]\n",
|
|
Object, Object->Common.Type,
|
|
AcpiUtGetObjectTypeName (Object), NewCount));
|
|
break;
|
|
|
|
case REF_DECREMENT:
|
|
|
|
/* The current reference count must be non-zero */
|
|
|
|
if (OriginalCount)
|
|
{
|
|
NewCount = OriginalCount - 1;
|
|
Object->Common.ReferenceCount = NewCount;
|
|
}
|
|
|
|
AcpiOsReleaseLock (AcpiGbl_ReferenceCountLock, LockFlags);
|
|
|
|
if (!OriginalCount)
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"Obj %p, Reference Count is already zero, cannot decrement\n",
|
|
Object));
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ALLOCATIONS,
|
|
"%s: Obj %p Type %.2X Refs %.2X [Decremented]\n",
|
|
ACPI_GET_FUNCTION_NAME, Object, Object->Common.Type, NewCount));
|
|
|
|
/* Actually delete the object on a reference count of zero */
|
|
|
|
if (NewCount == 0)
|
|
{
|
|
AcpiUtDeleteInternalObj (Object);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
|
|
AcpiOsReleaseLock (AcpiGbl_ReferenceCountLock, LockFlags);
|
|
ACPI_ERROR ((AE_INFO, "Unknown Reference Count action (0x%X)",
|
|
Action));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Sanity check the reference count, for debug purposes only.
|
|
* (A deleted object will have a huge reference count)
|
|
*/
|
|
if (NewCount > ACPI_MAX_REFERENCE_COUNT)
|
|
{
|
|
ACPI_WARNING ((AE_INFO,
|
|
"Large Reference Count (0x%X) in object %p, Type=0x%.2X",
|
|
NewCount, Object, Object->Common.Type));
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtUpdateObjectReference
|
|
*
|
|
* PARAMETERS: Object - Increment ref count for this object
|
|
* and all sub-objects
|
|
* Action - Either REF_INCREMENT or REF_DECREMENT
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Increment the object reference count
|
|
*
|
|
* Object references are incremented when:
|
|
* 1) An object is attached to a Node (namespace object)
|
|
* 2) An object is copied (all subobjects must be incremented)
|
|
*
|
|
* Object references are decremented when:
|
|
* 1) An object is detached from an Node
|
|
*
|
|
******************************************************************************/
|
|
|
|
ACPI_STATUS
|
|
AcpiUtUpdateObjectReference (
|
|
ACPI_OPERAND_OBJECT *Object,
|
|
UINT16 Action)
|
|
{
|
|
ACPI_STATUS Status = AE_OK;
|
|
ACPI_GENERIC_STATE *StateList = NULL;
|
|
ACPI_OPERAND_OBJECT *NextObject = NULL;
|
|
ACPI_OPERAND_OBJECT *PrevObject;
|
|
ACPI_GENERIC_STATE *State;
|
|
UINT32 i;
|
|
|
|
|
|
ACPI_FUNCTION_NAME (UtUpdateObjectReference);
|
|
|
|
|
|
while (Object)
|
|
{
|
|
/* Make sure that this isn't a namespace handle */
|
|
|
|
if (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED)
|
|
{
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Object %p is NS handle\n", Object));
|
|
return (AE_OK);
|
|
}
|
|
|
|
/*
|
|
* All sub-objects must have their reference count incremented
|
|
* also. Different object types have different subobjects.
|
|
*/
|
|
switch (Object->Common.Type)
|
|
{
|
|
case ACPI_TYPE_DEVICE:
|
|
case ACPI_TYPE_PROCESSOR:
|
|
case ACPI_TYPE_POWER:
|
|
case ACPI_TYPE_THERMAL:
|
|
/*
|
|
* Update the notify objects for these types (if present)
|
|
* Two lists, system and device notify handlers.
|
|
*/
|
|
for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
|
|
{
|
|
PrevObject = Object->CommonNotify.NotifyList[i];
|
|
while (PrevObject)
|
|
{
|
|
NextObject = PrevObject->Notify.Next[i];
|
|
AcpiUtUpdateRefCount (PrevObject, Action);
|
|
PrevObject = NextObject;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_PACKAGE:
|
|
/*
|
|
* We must update all the sub-objects of the package,
|
|
* each of whom may have their own sub-objects.
|
|
*/
|
|
for (i = 0; i < Object->Package.Count; i++)
|
|
{
|
|
/*
|
|
* Null package elements are legal and can be simply
|
|
* ignored.
|
|
*/
|
|
NextObject = Object->Package.Elements[i];
|
|
if (!NextObject)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
switch (NextObject->Common.Type)
|
|
{
|
|
case ACPI_TYPE_INTEGER:
|
|
case ACPI_TYPE_STRING:
|
|
case ACPI_TYPE_BUFFER:
|
|
/*
|
|
* For these very simple sub-objects, we can just
|
|
* update the reference count here and continue.
|
|
* Greatly increases performance of this operation.
|
|
*/
|
|
AcpiUtUpdateRefCount (NextObject, Action);
|
|
break;
|
|
|
|
default:
|
|
/*
|
|
* For complex sub-objects, push them onto the stack
|
|
* for later processing (this eliminates recursion.)
|
|
*/
|
|
Status = AcpiUtCreateUpdateStateAndPush (
|
|
NextObject, Action, &StateList);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto ErrorExit;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
NextObject = NULL;
|
|
break;
|
|
|
|
case ACPI_TYPE_BUFFER_FIELD:
|
|
|
|
NextObject = Object->BufferField.BufferObj;
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_REGION_FIELD:
|
|
|
|
NextObject = Object->Field.RegionObj;
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_BANK_FIELD:
|
|
|
|
NextObject = Object->BankField.BankObj;
|
|
Status = AcpiUtCreateUpdateStateAndPush (
|
|
Object->BankField.RegionObj, Action, &StateList);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto ErrorExit;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_INDEX_FIELD:
|
|
|
|
NextObject = Object->IndexField.IndexObj;
|
|
Status = AcpiUtCreateUpdateStateAndPush (
|
|
Object->IndexField.DataObj, Action, &StateList);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
goto ErrorExit;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_LOCAL_REFERENCE:
|
|
/*
|
|
* The target of an Index (a package, string, or buffer) or a named
|
|
* reference must track changes to the ref count of the index or
|
|
* target object.
|
|
*/
|
|
if ((Object->Reference.Class == ACPI_REFCLASS_INDEX) ||
|
|
(Object->Reference.Class== ACPI_REFCLASS_NAME))
|
|
{
|
|
NextObject = Object->Reference.Object;
|
|
}
|
|
break;
|
|
|
|
case ACPI_TYPE_REGION:
|
|
default:
|
|
|
|
break; /* No subobjects for all other types */
|
|
}
|
|
|
|
/*
|
|
* Now we can update the count in the main object. This can only
|
|
* happen after we update the sub-objects in case this causes the
|
|
* main object to be deleted.
|
|
*/
|
|
AcpiUtUpdateRefCount (Object, Action);
|
|
Object = NULL;
|
|
|
|
/* Move on to the next object to be updated */
|
|
|
|
if (NextObject)
|
|
{
|
|
Object = NextObject;
|
|
NextObject = NULL;
|
|
}
|
|
else if (StateList)
|
|
{
|
|
State = AcpiUtPopGenericState (&StateList);
|
|
Object = State->Update.Object;
|
|
AcpiUtDeleteGenericState (State);
|
|
}
|
|
}
|
|
|
|
return (AE_OK);
|
|
|
|
|
|
ErrorExit:
|
|
|
|
ACPI_EXCEPTION ((AE_INFO, Status,
|
|
"Could not update object reference count"));
|
|
|
|
/* Free any stacked Update State objects */
|
|
|
|
while (StateList)
|
|
{
|
|
State = AcpiUtPopGenericState (&StateList);
|
|
AcpiUtDeleteGenericState (State);
|
|
}
|
|
|
|
return (Status);
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtAddReference
|
|
*
|
|
* PARAMETERS: Object - Object whose reference count is to be
|
|
* incremented
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Add one reference to an ACPI object
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiUtAddReference (
|
|
ACPI_OPERAND_OBJECT *Object)
|
|
{
|
|
|
|
ACPI_FUNCTION_NAME (UtAddReference);
|
|
|
|
|
|
/* Ensure that we have a valid object */
|
|
|
|
if (!AcpiUtValidInternalObject (Object))
|
|
{
|
|
return;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
|
|
"Obj %p Current Refs=%X [To Be Incremented]\n",
|
|
Object, Object->Common.ReferenceCount));
|
|
|
|
/* Increment the reference count */
|
|
|
|
(void) AcpiUtUpdateObjectReference (Object, REF_INCREMENT);
|
|
return;
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: AcpiUtRemoveReference
|
|
*
|
|
* PARAMETERS: Object - Object whose ref count will be decremented
|
|
*
|
|
* RETURN: None
|
|
*
|
|
* DESCRIPTION: Decrement the reference count of an ACPI internal object
|
|
*
|
|
******************************************************************************/
|
|
|
|
void
|
|
AcpiUtRemoveReference (
|
|
ACPI_OPERAND_OBJECT *Object)
|
|
{
|
|
|
|
ACPI_FUNCTION_NAME (UtRemoveReference);
|
|
|
|
|
|
/*
|
|
* Allow a NULL pointer to be passed in, just ignore it. This saves
|
|
* each caller from having to check. Also, ignore NS nodes.
|
|
*/
|
|
if (!Object ||
|
|
(ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED))
|
|
|
|
{
|
|
return;
|
|
}
|
|
|
|
/* Ensure that we have a valid object */
|
|
|
|
if (!AcpiUtValidInternalObject (Object))
|
|
{
|
|
return;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ALLOCATIONS,
|
|
"%s: Obj %p Current Refs=%X [To Be Decremented]\n",
|
|
ACPI_GET_FUNCTION_NAME, Object, Object->Common.ReferenceCount));
|
|
|
|
/*
|
|
* Decrement the reference count, and only actually delete the object
|
|
* if the reference count becomes 0. (Must also decrement the ref count
|
|
* of all subobjects!)
|
|
*/
|
|
(void) AcpiUtUpdateObjectReference (Object, REF_DECREMENT);
|
|
return;
|
|
}
|